node_modules/@angular/core/fesm2015/testing.js

/**
 * @license Angular v11.2.14
 * (c) 2010-2021 Google LLC. https://angular.io/
 * License: MIT
 */

import { getDebugNode, RendererFactory2, ɵstringify, ɵReflectionCapabilities, Directive, Component, Pipe, NgModule, ɵgetInjectableDef, ɵNG_COMP_DEF, ɵRender3NgModuleRef, ApplicationInitStatus, LOCALE_ID, ɵDEFAULT_LOCALE_ID, ɵsetLocaleId, ɵRender3ComponentFactory, ɵcompileComponent, ɵNG_DIR_DEF, ɵcompileDirective, ɵNG_PIPE_DEF, ɵcompilePipe, ɵNG_MOD_DEF, ɵtransitiveScopesFor, ɵpatchComponentDefWithScope, ɵNG_INJ_DEF, ɵcompileNgModuleDefs, NgZone, Compiler, COMPILER_OPTIONS, ɵNgModuleFactory, ModuleWithComponentFactories, InjectionToken, Injector, InjectFlags, ɵresetCompiledComponents, ɵflushModuleScopingQueueAsMuchAsPossible, Injectable, ɵclearOverrides, ɵoverrideComponentView, ɵINJECTOR_SCOPE, Optional, SkipSelf, ɵoverrideProvider, ɵivyEnabled } from '@angular/core';
import { __awaiter } from 'tslib';
import { ResourceLoader } from '@angular/compiler';

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
/**
 * Wraps a test function in an asynchronous test zone. The test will automatically
 * complete when all asynchronous calls within this zone are done. Can be used
 * to wrap an {@link inject} call.
 *
 * Example:
 *
 * ```
 * it('...', waitForAsync(inject([AClass], (object) => {
 *   object.doSomething.then(() => {
 *     expect(...);
 *   })
 * });
 * ```
 *
 * @publicApi
 */
function waitForAsync(fn) {
    const _Zone = typeof Zone !== 'undefined' ? Zone : null;
    if (!_Zone) {
        return function () {
            return Promise.reject('Zone is needed for the waitForAsync() test helper but could not be found. ' +
                'Please make sure that your environment includes zone.js/dist/zone.js');
        };
    }
    const asyncTest = _Zone && _Zone[_Zone.__symbol__('asyncTest')];
    if (typeof asyncTest === 'function') {
        return asyncTest(fn);
    }
    return function () {
        return Promise.reject('zone-testing.js is needed for the async() test helper but could not be found. ' +
            'Please make sure that your environment includes zone.js/dist/zone-testing.js');
    };
}
/**
 * @deprecated use `waitForAsync()`, (expected removal in v12)
 * @see {@link waitForAsync}
 * @publicApi
 * */
function async(fn) {
    return waitForAsync(fn);
}

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
/**
 * Fixture for debugging and testing a component.
 *
 * @publicApi
 */
class ComponentFixture {
    constructor(componentRef, ngZone, _autoDetect) {
        this.componentRef = componentRef;
        this.ngZone = ngZone;
        this._autoDetect = _autoDetect;
        this._isStable = true;
        this._isDestroyed = false;
        this._resolve = null;
        this._promise = null;
        this._onUnstableSubscription = null;
        this._onStableSubscription = null;
        this._onMicrotaskEmptySubscription = null;
        this._onErrorSubscription = null;
        this.changeDetectorRef = componentRef.changeDetectorRef;
        this.elementRef = componentRef.location;
        this.debugElement = getDebugNode(this.elementRef.nativeElement);
        this.componentInstance = componentRef.instance;
        this.nativeElement = this.elementRef.nativeElement;
        this.componentRef = componentRef;
        this.ngZone = ngZone;
        if (ngZone) {
            // Create subscriptions outside the NgZone so that the callbacks run oustide
            // of NgZone.
            ngZone.runOutsideAngular(() => {
                this._onUnstableSubscription = ngZone.onUnstable.subscribe({
                    next: () => {
                        this._isStable = false;
                    }
                });
                this._onMicrotaskEmptySubscription = ngZone.onMicrotaskEmpty.subscribe({
                    next: () => {
                        if (this._autoDetect) {
                            // Do a change detection run with checkNoChanges set to true to check
                            // there are no changes on the second run.
                            this.detectChanges(true);
                        }
                    }
                });
                this._onStableSubscription = ngZone.onStable.subscribe({
                    next: () => {
                        this._isStable = true;
                        // Check whether there is a pending whenStable() completer to resolve.
                        if (this._promise !== null) {
                            // If so check whether there are no pending macrotasks before resolving.
                            // Do this check in the next tick so that ngZone gets a chance to update the state of
                            // pending macrotasks.
                            scheduleMicroTask(() => {
                                if (!ngZone.hasPendingMacrotasks) {
                                    if (this._promise !== null) {
                                        this._resolve(true);
                                        this._resolve = null;
                                        this._promise = null;
                                    }
                                }
                            });
                        }
                    }
                });
                this._onErrorSubscription = ngZone.onError.subscribe({
                    next: (error) => {
                        throw error;
                    }
                });
            });
        }
    }
    _tick(checkNoChanges) {
        this.changeDetectorRef.detectChanges();
        if (checkNoChanges) {
            this.checkNoChanges();
        }
    }
    /**
     * Trigger a change detection cycle for the component.
     */
    detectChanges(checkNoChanges = true) {
        if (this.ngZone != null) {
            // Run the change detection inside the NgZone so that any async tasks as part of the change
            // detection are captured by the zone and can be waited for in isStable.
            this.ngZone.run(() => {
                this._tick(checkNoChanges);
            });
        }
        else {
            // Running without zone. Just do the change detection.
            this._tick(checkNoChanges);
        }
    }
    /**
     * Do a change detection run to make sure there were no changes.
     */
    checkNoChanges() {
        this.changeDetectorRef.checkNoChanges();
    }
    /**
     * Set whether the fixture should autodetect changes.
     *
     * Also runs detectChanges once so that any existing change is detected.
     */
    autoDetectChanges(autoDetect = true) {
        if (this.ngZone == null) {
            throw new Error('Cannot call autoDetectChanges when ComponentFixtureNoNgZone is set');
        }
        this._autoDetect = autoDetect;
        this.detectChanges();
    }
    /**
     * Return whether the fixture is currently stable or has async tasks that have not been completed
     * yet.
     */
    isStable() {
        return this._isStable && !this.ngZone.hasPendingMacrotasks;
    }
    /**
     * Get a promise that resolves when the fixture is stable.
     *
     * This can be used to resume testing after events have triggered asynchronous activity or
     * asynchronous change detection.
     */
    whenStable() {
        if (this.isStable()) {
            return Promise.resolve(false);
        }
        else if (this._promise !== null) {
            return this._promise;
        }
        else {
            this._promise = new Promise(res => {
                this._resolve = res;
            });
            return this._promise;
        }
    }
    _getRenderer() {
        if (this._renderer === undefined) {
            this._renderer = this.componentRef.injector.get(RendererFactory2, null);
        }
        return this._renderer;
    }
    /**
     * Get a promise that resolves when the ui state is stable following animations.
     */
    whenRenderingDone() {
        const renderer = this._getRenderer();
        if (renderer && renderer.whenRenderingDone) {
            return renderer.whenRenderingDone();
        }
        return this.whenStable();
    }
    /**
     * Trigger component destruction.
     */
    destroy() {
        if (!this._isDestroyed) {
            this.componentRef.destroy();
            if (this._onUnstableSubscription != null) {
                this._onUnstableSubscription.unsubscribe();
                this._onUnstableSubscription = null;
            }
            if (this._onStableSubscription != null) {
                this._onStableSubscription.unsubscribe();
                this._onStableSubscription = null;
            }
            if (this._onMicrotaskEmptySubscription != null) {
                this._onMicrotaskEmptySubscription.unsubscribe();
                this._onMicrotaskEmptySubscription = null;
            }
            if (this._onErrorSubscription != null) {
                this._onErrorSubscription.unsubscribe();
                this._onErrorSubscription = null;
            }
            this._isDestroyed = true;
        }
    }
}
function scheduleMicroTask(fn) {
    Zone.current.scheduleMicroTask('scheduleMicrotask', fn);
}

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
const _Zone = typeof Zone !== 'undefined' ? Zone : null;
const fakeAsyncTestModule = _Zone && _Zone[_Zone.__symbol__('fakeAsyncTest')];
const fakeAsyncTestModuleNotLoadedErrorMessage = `zone-testing.js is needed for the fakeAsync() test helper but could not be found.
        Please make sure that your environment includes zone.js/dist/zone-testing.js`;
/**
 * Clears out the shared fake async zone for a test.
 * To be called in a global `beforeEach`.
 *
 * @publicApi
 */
function resetFakeAsyncZone() {
    if (fakeAsyncTestModule) {
        return fakeAsyncTestModule.resetFakeAsyncZone();
    }
    throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);
}
/**
 * Wraps a function to be executed in the fakeAsync zone:
 * - microtasks are manually executed by calling `flushMicrotasks()`,
 * - timers are synchronous, `tick()` simulates the asynchronous passage of time.
 *
 * If there are any pending timers at the end of the function, an exception will be thrown.
 *
 * Can be used to wrap inject() calls.
 *
 * @usageNotes
 * ### Example
 *
 * {@example core/testing/ts/fake_async.ts region='basic'}
 *
 * @param fn
 * @returns The function wrapped to be executed in the fakeAsync zone
 *
 * @publicApi
 */
function fakeAsync(fn) {
    if (fakeAsyncTestModule) {
        return fakeAsyncTestModule.fakeAsync(fn);
    }
    throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);
}
/**
 * Simulates the asynchronous passage of time for the timers in the fakeAsync zone.
 *
 * The microtasks queue is drained at the very start of this function and after any timer callback
 * has been executed.
 *
 * @usageNotes
 * ### Example
 *
 * {@example core/testing/ts/fake_async.ts region='basic'}
 *
 * @param millis, the number of millisecond to advance the virtual timer
 * @param tickOptions, the options of tick with a flag called
 * processNewMacroTasksSynchronously, whether to invoke the new macroTasks, by default is
 * false, means the new macroTasks will be invoked
 *
 * For example,
 *
 * it ('test with nested setTimeout', fakeAsync(() => {
 *   let nestedTimeoutInvoked = false;
 *   function funcWithNestedTimeout() {
 *     setTimeout(() => {
 *       nestedTimeoutInvoked = true;
 *     });
 *   };
 *   setTimeout(funcWithNestedTimeout);
 *   tick();
 *   expect(nestedTimeoutInvoked).toBe(true);
 * }));
 *
 * in this case, we have a nested timeout (new macroTask), when we tick, both the
 * funcWithNestedTimeout and the nested timeout both will be invoked.
 *
 * it ('test with nested setTimeout', fakeAsync(() => {
 *   let nestedTimeoutInvoked = false;
 *   function funcWithNestedTimeout() {
 *     setTimeout(() => {
 *       nestedTimeoutInvoked = true;
 *     });
 *   };
 *   setTimeout(funcWithNestedTimeout);
 *   tick(0, {processNewMacroTasksSynchronously: false});
 *   expect(nestedTimeoutInvoked).toBe(false);
 * }));
 *
 * if we pass the tickOptions with processNewMacroTasksSynchronously to be false, the nested timeout
 * will not be invoked.
 *
 *
 * @publicApi
 */
function tick(millis = 0, tickOptions = {
    processNewMacroTasksSynchronously: true
}) {
    if (fakeAsyncTestModule) {
        return fakeAsyncTestModule.tick(millis, tickOptions);
    }
    throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);
}
/**
 * Simulates the asynchronous passage of time for the timers in the fakeAsync zone by
 * draining the macrotask queue until it is empty. The returned value is the milliseconds
 * of time that would have been elapsed.
 *
 * @param maxTurns
 * @returns The simulated time elapsed, in millis.
 *
 * @publicApi
 */
function flush(maxTurns) {
    if (fakeAsyncTestModule) {
        return fakeAsyncTestModule.flush(maxTurns);
    }
    throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);
}
/**
 * Discard all remaining periodic tasks.
 *
 * @publicApi
 */
function discardPeriodicTasks() {
    if (fakeAsyncTestModule) {
        return fakeAsyncTestModule.discardPeriodicTasks();
    }
    throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);
}
/**
 * Flush any pending microtasks.
 *
 * @publicApi
 */
function flushMicrotasks() {
    if (fakeAsyncTestModule) {
        return fakeAsyncTestModule.flushMicrotasks();
    }
    throw new Error(fakeAsyncTestModuleNotLoadedErrorMessage);
}

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
/**
 * Injectable completer that allows signaling completion of an asynchronous test. Used internally.
 */
class AsyncTestCompleter {
    constructor() {
        this._promise = new Promise((res, rej) => {
            this._resolve = res;
            this._reject = rej;
        });
    }
    done(value) {
        this._resolve(value);
    }
    fail(error, stackTrace) {
        this._reject(error);
    }
    get promise() {
        return this._promise;
    }
}

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
/**
 * Used to resolve resource URLs on `@Component` when used with JIT compilation.
 *
 * Example:
 * ```
 * @Component({
 *   selector: 'my-comp',
 *   templateUrl: 'my-comp.html', // This requires asynchronous resolution
 * })
 * class MyComponent{
 * }
 *
 * // Calling `renderComponent` will fail because `renderComponent` is a synchronous process
 * // and `MyComponent`'s `@Component.templateUrl` needs to be resolved asynchronously.
 *
 * // Calling `resolveComponentResources()` will resolve `@Component.templateUrl` into
 * // `@Component.template`, which allows `renderComponent` to proceed in a synchronous manner.
 *
 * // Use browser's `fetch()` function as the default resource resolution strategy.
 * resolveComponentResources(fetch).then(() => {
 *   // After resolution all URLs have been converted into `template` strings.
 *   renderComponent(MyComponent);
 * });
 *
 * ```
 *
 * NOTE: In AOT the resolution happens during compilation, and so there should be no need
 * to call this method outside JIT mode.
 *
 * @param resourceResolver a function which is responsible for returning a `Promise` to the
 * contents of the resolved URL. Browser's `fetch()` method is a good default implementation.
 */
function resolveComponentResources(resourceResolver) {
    // Store all promises which are fetching the resources.
    const componentResolved = [];
    // Cache so that we don't fetch the same resource more than once.
    const urlMap = new Map();
    function cachedResourceResolve(url) {
        let promise = urlMap.get(url);
        if (!promise) {
            const resp = resourceResolver(url);
            urlMap.set(url, promise = resp.then(unwrapResponse));
        }
        return promise;
    }
    componentResourceResolutionQueue.forEach((component, type) => {
        const promises = [];
        if (component.templateUrl) {
            promises.push(cachedResourceResolve(component.templateUrl).then((template) => {
                component.template = template;
            }));
        }
        const styleUrls = component.styleUrls;
        const styles = component.styles || (component.styles = []);
        const styleOffset = component.styles.length;
        styleUrls && styleUrls.forEach((styleUrl, index) => {
            styles.push(''); // pre-allocate array.
            promises.push(cachedResourceResolve(styleUrl).then((style) => {
                styles[styleOffset + index] = style;
                styleUrls.splice(styleUrls.indexOf(styleUrl), 1);
                if (styleUrls.length == 0) {
                    component.styleUrls = undefined;
                }
            }));
        });
        const fullyResolved = Promise.all(promises).then(() => componentDefResolved(type));
        componentResolved.push(fullyResolved);
    });
    clearResolutionOfComponentResourcesQueue();
    return Promise.all(componentResolved).then(() => undefined);
}
let componentResourceResolutionQueue = new Map();
// Track when existing ɵcmp for a Type is waiting on resources.
const componentDefPendingResolution = new Set();
function maybeQueueResolutionOfComponentResources(type, metadata) {
    if (componentNeedsResolution(metadata)) {
        componentResourceResolutionQueue.set(type, metadata);
        componentDefPendingResolution.add(type);
    }
}
function isComponentDefPendingResolution(type) {
    return componentDefPendingResolution.has(type);
}
function componentNeedsResolution(component) {
    return !!((component.templateUrl && !component.hasOwnProperty('template')) ||
        component.styleUrls && component.styleUrls.length);
}
function clearResolutionOfComponentResourcesQueue() {
    const old = componentResourceResolutionQueue;
    componentResourceResolutionQueue = new Map();
    return old;
}
function restoreComponentResolutionQueue(queue) {
    componentDefPendingResolution.clear();
    queue.forEach((_, type) => componentDefPendingResolution.add(type));
    componentResourceResolutionQueue = queue;
}
function isComponentResourceResolutionQueueEmpty() {
    return componentResourceResolutionQueue.size === 0;
}
function unwrapResponse(response) {
    return typeof response == 'string' ? response : response.text();
}
function componentDefResolved(type) {
    componentDefPendingResolution.delete(type);
}

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
let _nextReferenceId = 0;
class MetadataOverrider {
    constructor() {
        this._references = new Map();
    }
    /**
     * Creates a new instance for the given metadata class
     * based on an old instance and overrides.
     */
    overrideMetadata(metadataClass, oldMetadata, override) {
        const props = {};
        if (oldMetadata) {
            _valueProps(oldMetadata).forEach((prop) => props[prop] = oldMetadata[prop]);
        }
        if (override.set) {
            if (override.remove || override.add) {
                throw new Error(`Cannot set and add/remove ${ɵstringify(metadataClass)} at the same time!`);
            }
            setMetadata(props, override.set);
        }
        if (override.remove) {
            removeMetadata(props, override.remove, this._references);
        }
        if (override.add) {
            addMetadata(props, override.add);
        }
        return new metadataClass(props);
    }
}
function removeMetadata(metadata, remove, references) {
    const removeObjects = new Set();
    for (const prop in remove) {
        const removeValue = remove[prop];
        if (Array.isArray(removeValue)) {
            removeValue.forEach((value) => {
                removeObjects.add(_propHashKey(prop, value, references));
            });
        }
        else {
            removeObjects.add(_propHashKey(prop, removeValue, references));
        }
    }
    for (const prop in metadata) {
        const propValue = metadata[prop];
        if (Array.isArray(propValue)) {
            metadata[prop] = propValue.filter((value) => !removeObjects.has(_propHashKey(prop, value, references)));
        }
        else {
            if (removeObjects.has(_propHashKey(prop, propValue, references))) {
                metadata[prop] = undefined;
            }
        }
    }
}
function addMetadata(metadata, add) {
    for (const prop in add) {
        const addValue = add[prop];
        const propValue = metadata[prop];
        if (propValue != null && Array.isArray(propValue)) {
            metadata[prop] = propValue.concat(addValue);
        }
        else {
            metadata[prop] = addValue;
        }
    }
}
function setMetadata(metadata, set) {
    for (const prop in set) {
        metadata[prop] = set[prop];
    }
}
function _propHashKey(propName, propValue, references) {
    const replacer = (key, value) => {
        if (typeof value === 'function') {
            value = _serializeReference(value, references);
        }
        return value;
    };
    return `${propName}:${JSON.stringify(propValue, replacer)}`;
}
function _serializeReference(ref, references) {
    let id = references.get(ref);
    if (!id) {
        id = `${ɵstringify(ref)}${_nextReferenceId++}`;
        references.set(ref, id);
    }
    return id;
}
function _valueProps(obj) {
    const props = [];
    // regular public props
    Object.keys(obj).forEach((prop) => {
        if (!prop.startsWith('_')) {
            props.push(prop);
        }
    });
    // getters
    let proto = obj;
    while (proto = Object.getPrototypeOf(proto)) {
        Object.keys(proto).forEach((protoProp) => {
            const desc = Object.getOwnPropertyDescriptor(proto, protoProp);
            if (!protoProp.startsWith('_') && desc && 'get' in desc) {
                props.push(protoProp);
            }
        });
    }
    return props;
}

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
const reflection = new ɵReflectionCapabilities();
/**
 * Allows to override ivy metadata for tests (via the `TestBed`).
 */
class OverrideResolver {
    constructor() {
        this.overrides = new Map();
        this.resolved = new Map();
    }
    addOverride(type, override) {
        const overrides = this.overrides.get(type) || [];
        overrides.push(override);
        this.overrides.set(type, overrides);
        this.resolved.delete(type);
    }
    setOverrides(overrides) {
        this.overrides.clear();
        overrides.forEach(([type, override]) => {
            this.addOverride(type, override);
        });
    }
    getAnnotation(type) {
        const annotations = reflection.annotations(type);
        // Try to find the nearest known Type annotation and make sure that this annotation is an
        // instance of the type we are looking for, so we can use it for resolution. Note: there might
        // be multiple known annotations found due to the fact that Components can extend Directives (so
        // both Directive and Component annotations would be present), so we always check if the known
        // annotation has the right type.
        for (let i = annotations.length - 1; i >= 0; i--) {
            const annotation = annotations[i];
            const isKnownType = annotation instanceof Directive || annotation instanceof Component ||
                annotation instanceof Pipe || annotation instanceof NgModule;
            if (isKnownType) {
                return annotation instanceof this.type ? annotation : null;
            }
        }
        return null;
    }
    resolve(type) {
        let resolved = this.resolved.get(type) || null;
        if (!resolved) {
            resolved = this.getAnnotation(type);
            if (resolved) {
                const overrides = this.overrides.get(type);
                if (overrides) {
                    const overrider = new MetadataOverrider();
                    overrides.forEach(override => {
                        resolved = overrider.overrideMetadata(this.type, resolved, override);
                    });
                }
            }
            this.resolved.set(type, resolved);
        }
        return resolved;
    }
}
class DirectiveResolver extends OverrideResolver {
    get type() {
        return Directive;
    }
}
class ComponentResolver extends OverrideResolver {
    get type() {
        return Component;
    }
}
class PipeResolver extends OverrideResolver {
    get type() {
        return Pipe;
    }
}
class NgModuleResolver extends OverrideResolver {
    get type() {
        return NgModule;
    }
}

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
var TestingModuleOverride;
(function (TestingModuleOverride) {
    TestingModuleOverride[TestingModuleOverride["DECLARATION"] = 0] = "DECLARATION";
    TestingModuleOverride[TestingModuleOverride["OVERRIDE_TEMPLATE"] = 1] = "OVERRIDE_TEMPLATE";
})(TestingModuleOverride || (TestingModuleOverride = {}));
function isTestingModuleOverride(value) {
    return value === TestingModuleOverride.DECLARATION ||
        value === TestingModuleOverride.OVERRIDE_TEMPLATE;
}
class R3TestBedCompiler {
    constructor(platform, additionalModuleTypes) {
        this.platform = platform;
        this.additionalModuleTypes = additionalModuleTypes;
        this.originalComponentResolutionQueue = null;
        // Testing module configuration
        this.declarations = [];
        this.imports = [];
        this.providers = [];
        this.schemas = [];
        // Queues of components/directives/pipes that should be recompiled.
        this.pendingComponents = new Set();
        this.pendingDirectives = new Set();
        this.pendingPipes = new Set();
        // Keep track of all components and directives, so we can patch Providers onto defs later.
        this.seenComponents = new Set();
        this.seenDirectives = new Set();
        // Keep track of overridden modules, so that we can collect all affected ones in the module tree.
        this.overriddenModules = new Set();
        // Store resolved styles for Components that have template overrides present and `styleUrls`
        // defined at the same time.
        this.existingComponentStyles = new Map();
        this.resolvers = initResolvers();
        this.componentToModuleScope = new Map();
        // Map that keeps initial version of component/directive/pipe defs in case
        // we compile a Type again, thus overriding respective static fields. This is
        // required to make sure we restore defs to their initial states between test runs
        // TODO: we should support the case with multiple defs on a type
        this.initialNgDefs = new Map();
        // Array that keeps cleanup operations for initial versions of component/directive/pipe/module
        // defs in case TestBed makes changes to the originals.
        this.defCleanupOps = [];
        this._injector = null;
        this.compilerProviders = null;
        this.providerOverrides = [];
        this.rootProviderOverrides = [];
        // Overrides for injectables with `{providedIn: SomeModule}` need to be tracked and added to that
        // module's provider list.
        this.providerOverridesByModule = new Map();
        this.providerOverridesByToken = new Map();
        this.moduleProvidersOverridden = new Set();
        this.testModuleRef = null;
        class DynamicTestModule {
        }
        this.testModuleType = DynamicTestModule;
    }
    setCompilerProviders(providers) {
        this.compilerProviders = providers;
        this._injector = null;
    }
    configureTestingModule(moduleDef) {
        // Enqueue any compilation tasks for the directly declared component.
        if (moduleDef.declarations !== undefined) {
            this.queueTypeArray(moduleDef.declarations, TestingModuleOverride.DECLARATION);
            this.declarations.push(...moduleDef.declarations);
        }
        // Enqueue any compilation tasks for imported modules.
        if (moduleDef.imports !== undefined) {
            this.queueTypesFromModulesArray(moduleDef.imports);
            this.imports.push(...moduleDef.imports);
        }
        if (moduleDef.providers !== undefined) {
            this.providers.push(...moduleDef.providers);
        }
        if (moduleDef.schemas !== undefined) {
            this.schemas.push(...moduleDef.schemas);
        }
    }
    overrideModule(ngModule, override) {
        this.overriddenModules.add(ngModule);
        // Compile the module right away.
        this.resolvers.module.addOverride(ngModule, override);
        const metadata = this.resolvers.module.resolve(ngModule);
        if (metadata === null) {
            throw invalidTypeError(ngModule.name, 'NgModule');
        }
        this.recompileNgModule(ngModule, metadata);
        // At this point, the module has a valid module def (ɵmod), but the override may have introduced
        // new declarations or imported modules. Ingest any possible new types and add them to the
        // current queue.
        this.queueTypesFromModulesArray([ngModule]);
    }
    overrideComponent(component, override) {
        this.resolvers.component.addOverride(component, override);
        this.pendingComponents.add(component);
    }
    overrideDirective(directive, override) {
        this.resolvers.directive.addOverride(directive, override);
        this.pendingDirectives.add(directive);
    }
    overridePipe(pipe, override) {
        this.resolvers.pipe.addOverride(pipe, override);
        this.pendingPipes.add(pipe);
    }
    overrideProvider(token, provider) {
        let providerDef;
        if (provider.useFactory !== undefined) {
            providerDef = {
                provide: token,
                useFactory: provider.useFactory,
                deps: provider.deps || [],
                multi: provider.multi
            };
        }
        else if (provider.useValue !== undefined) {
            providerDef = { provide: token, useValue: provider.useValue, multi: provider.multi };
        }
        else {
            providerDef = { provide: token };
        }
        const injectableDef = typeof token !== 'string' ? ɵgetInjectableDef(token) : null;
        const isRoot = injectableDef !== null && injectableDef.providedIn === 'root';
        const overridesBucket = isRoot ? this.rootProviderOverrides : this.providerOverrides;
        overridesBucket.push(providerDef);
        // Keep overrides grouped by token as well for fast lookups using token
        this.providerOverridesByToken.set(token, providerDef);
        if (injectableDef !== null && injectableDef.providedIn !== null &&
            typeof injectableDef.providedIn !== 'string') {
            const existingOverrides = this.providerOverridesByModule.get(injectableDef.providedIn);
            if (existingOverrides !== undefined) {
                existingOverrides.push(providerDef);
            }
            else {
                this.providerOverridesByModule.set(injectableDef.providedIn, [providerDef]);
            }
        }
    }
    overrideTemplateUsingTestingModule(type, template) {
        const def = type[ɵNG_COMP_DEF];
        const hasStyleUrls = () => {
            const metadata = this.resolvers.component.resolve(type);
            return !!metadata.styleUrls && metadata.styleUrls.length > 0;
        };
        const overrideStyleUrls = !!def && !isComponentDefPendingResolution(type) && hasStyleUrls();
        // In Ivy, compiling a component does not require knowing the module providing the
        // component's scope, so overrideTemplateUsingTestingModule can be implemented purely via
        // overrideComponent. Important: overriding template requires full Component re-compilation,
        // which may fail in case styleUrls are also present (thus Component is considered as required
        // resolution). In order to avoid this, we preemptively set styleUrls to an empty array,
        // preserve current styles available on Component def and restore styles back once compilation
        // is complete.
        const override = overrideStyleUrls ? { template, styles: [], styleUrls: [] } : { template };
        this.overrideComponent(type, { set: override });
        if (overrideStyleUrls && def.styles && def.styles.length > 0) {
            this.existingComponentStyles.set(type, def.styles);
        }
        // Set the component's scope to be the testing module.
        this.componentToModuleScope.set(type, TestingModuleOverride.OVERRIDE_TEMPLATE);
    }
    compileComponents() {
        return __awaiter(this, void 0, void 0, function* () {
            this.clearComponentResolutionQueue();
            // Run compilers for all queued types.
            let needsAsyncResources = this.compileTypesSync();
            // compileComponents() should not be async unless it needs to be.
            if (needsAsyncResources) {
                let resourceLoader;
                let resolver = (url) => {
                    if (!resourceLoader) {
                        resourceLoader = this.injector.get(ResourceLoader);
                    }
                    return Promise.resolve(resourceLoader.get(url));
                };
                yield resolveComponentResources(resolver);
            }
        });
    }
    finalize() {
        // One last compile
        this.compileTypesSync();
        // Create the testing module itself.
        this.compileTestModule();
        this.applyTransitiveScopes();
        this.applyProviderOverrides();
        // Patch previously stored `styles` Component values (taken from ɵcmp), in case these
        // Components have `styleUrls` fields defined and template override was requested.
        this.patchComponentsWithExistingStyles();
        // Clear the componentToModuleScope map, so that future compilations don't reset the scope of
        // every component.
        this.componentToModuleScope.clear();
        const parentInjector = this.platform.injector;
        this.testModuleRef = new ɵRender3NgModuleRef(this.testModuleType, parentInjector);
        // ApplicationInitStatus.runInitializers() is marked @internal to core.
        // Cast it to any before accessing it.
        this.testModuleRef.injector.get(ApplicationInitStatus).runInitializers();
        // Set locale ID after running app initializers, since locale information might be updated while
        // running initializers. This is also consistent with the execution order while bootstrapping an
        // app (see `packages/core/src/application_ref.ts` file).
        const localeId = this.testModuleRef.injector.get(LOCALE_ID, ɵDEFAULT_LOCALE_ID);
        ɵsetLocaleId(localeId);
        return this.testModuleRef;
    }
    /**
     * @internal
     */
    _compileNgModuleSync(moduleType) {
        this.queueTypesFromModulesArray([moduleType]);
        this.compileTypesSync();
        this.applyProviderOverrides();
        this.applyProviderOverridesToModule(moduleType);
        this.applyTransitiveScopes();
    }
    /**
     * @internal
     */
    _compileNgModuleAsync(moduleType) {
        return __awaiter(this, void 0, void 0, function* () {
            this.queueTypesFromModulesArray([moduleType]);
            yield this.compileComponents();
            this.applyProviderOverrides();
            this.applyProviderOverridesToModule(moduleType);
            this.applyTransitiveScopes();
        });
    }
    /**
     * @internal
     */
    _getModuleResolver() {
        return this.resolvers.module;
    }
    /**
     * @internal
     */
    _getComponentFactories(moduleType) {
        return maybeUnwrapFn(moduleType.ɵmod.declarations).reduce((factories, declaration) => {
            const componentDef = declaration.ɵcmp;
            componentDef && factories.push(new ɵRender3ComponentFactory(componentDef, this.testModuleRef));
            return factories;
        }, []);
    }
    compileTypesSync() {
        // Compile all queued components, directives, pipes.
        let needsAsyncResources = false;
        this.pendingComponents.forEach(declaration => {
            needsAsyncResources = needsAsyncResources || isComponentDefPendingResolution(declaration);
            const metadata = this.resolvers.component.resolve(declaration);
            if (metadata === null) {
                throw invalidTypeError(declaration.name, 'Component');
            }
            this.maybeStoreNgDef(ɵNG_COMP_DEF, declaration);
            ɵcompileComponent(declaration, metadata);
        });
        this.pendingComponents.clear();
        this.pendingDirectives.forEach(declaration => {
            const metadata = this.resolvers.directive.resolve(declaration);
            if (metadata === null) {
                throw invalidTypeError(declaration.name, 'Directive');
            }
            this.maybeStoreNgDef(ɵNG_DIR_DEF, declaration);
            ɵcompileDirective(declaration, metadata);
        });
        this.pendingDirectives.clear();
        this.pendingPipes.forEach(declaration => {
            const metadata = this.resolvers.pipe.resolve(declaration);
            if (metadata === null) {
                throw invalidTypeError(declaration.name, 'Pipe');
            }
            this.maybeStoreNgDef(ɵNG_PIPE_DEF, declaration);
            ɵcompilePipe(declaration, metadata);
        });
        this.pendingPipes.clear();
        return needsAsyncResources;
    }
    applyTransitiveScopes() {
        if (this.overriddenModules.size > 0) {
            // Module overrides (via `TestBed.overrideModule`) might affect scopes that were previously
            // calculated and stored in `transitiveCompileScopes`. If module overrides are present,
            // collect all affected modules and reset scopes to force their re-calculatation.
            const testingModuleDef = this.testModuleType[ɵNG_MOD_DEF];
            const affectedModules = this.collectModulesAffectedByOverrides(testingModuleDef.imports);
            if (affectedModules.size > 0) {
                affectedModules.forEach(moduleType => {
                    this.storeFieldOfDefOnType(moduleType, ɵNG_MOD_DEF, 'transitiveCompileScopes');
                    moduleType[ɵNG_MOD_DEF].transitiveCompileScopes = null;
                });
            }
        }
        const moduleToScope = new Map();
        const getScopeOfModule = (moduleType) => {
            if (!moduleToScope.has(moduleType)) {
                const isTestingModule = isTestingModuleOverride(moduleType);
                const realType = isTestingModule ? this.testModuleType : moduleType;
                moduleToScope.set(moduleType, ɵtransitiveScopesFor(realType));
            }
            return moduleToScope.get(moduleType);
        };
        this.componentToModuleScope.forEach((moduleType, componentType) => {
            const moduleScope = getScopeOfModule(moduleType);
            this.storeFieldOfDefOnType(componentType, ɵNG_COMP_DEF, 'directiveDefs');
            this.storeFieldOfDefOnType(componentType, ɵNG_COMP_DEF, 'pipeDefs');
            // `tView` that is stored on component def contains information about directives and pipes
            // that are in the scope of this component. Patching component scope will cause `tView` to be
            // changed. Store original `tView` before patching scope, so the `tView` (including scope
            // information) is restored back to its previous/original state before running next test.
            this.storeFieldOfDefOnType(componentType, ɵNG_COMP_DEF, 'tView');
            ɵpatchComponentDefWithScope(componentType.ɵcmp, moduleScope);
        });
        this.componentToModuleScope.clear();
    }
    applyProviderOverrides() {
        const maybeApplyOverrides = (field) => (type) => {
            const resolver = field === ɵNG_COMP_DEF ? this.resolvers.component : this.resolvers.directive;
            const metadata = resolver.resolve(type);
            if (this.hasProviderOverrides(metadata.providers)) {
                this.patchDefWithProviderOverrides(type, field);
            }
        };
        this.seenComponents.forEach(maybeApplyOverrides(ɵNG_COMP_DEF));
        this.seenDirectives.forEach(maybeApplyOverrides(ɵNG_DIR_DEF));
        this.seenComponents.clear();
        this.seenDirectives.clear();
    }
    applyProviderOverridesToModule(moduleType) {
        if (this.moduleProvidersOverridden.has(moduleType)) {
            return;
        }
        this.moduleProvidersOverridden.add(moduleType);
        const injectorDef = moduleType[ɵNG_INJ_DEF];
        if (this.providerOverridesByToken.size > 0) {
            const providers = [
                ...injectorDef.providers,
                ...(this.providerOverridesByModule.get(moduleType) || [])
            ];
            if (this.hasProviderOverrides(providers)) {
                this.maybeStoreNgDef(ɵNG_INJ_DEF, moduleType);
                this.storeFieldOfDefOnType(moduleType, ɵNG_INJ_DEF, 'providers');
                injectorDef.providers = this.getOverriddenProviders(providers);
            }
            // Apply provider overrides to imported modules recursively
            const moduleDef = moduleType[ɵNG_MOD_DEF];
            const imports = maybeUnwrapFn(moduleDef.imports);
            for (const importedModule of imports) {
                this.applyProviderOverridesToModule(importedModule);
            }
            // Also override the providers on any ModuleWithProviders imports since those don't appear in
            // the moduleDef.
            for (const importedModule of flatten(injectorDef.imports)) {
                if (isModuleWithProviders(importedModule)) {
                    this.defCleanupOps.push({
                        object: importedModule,
                        fieldName: 'providers',
                        originalValue: importedModule.providers
                    });
                    importedModule.providers = this.getOverriddenProviders(importedModule.providers);
                }
            }
        }
    }
    patchComponentsWithExistingStyles() {
        this.existingComponentStyles.forEach((styles, type) => type[ɵNG_COMP_DEF].styles = styles);
        this.existingComponentStyles.clear();
    }
    queueTypeArray(arr, moduleType) {
        for (const value of arr) {
            if (Array.isArray(value)) {
                this.queueTypeArray(value, moduleType);
            }
            else {
                this.queueType(value, moduleType);
            }
        }
    }
    recompileNgModule(ngModule, metadata) {
        // Cache the initial ngModuleDef as it will be overwritten.
        this.maybeStoreNgDef(ɵNG_MOD_DEF, ngModule);
        this.maybeStoreNgDef(ɵNG_INJ_DEF, ngModule);
        ɵcompileNgModuleDefs(ngModule, metadata);
    }
    queueType(type, moduleType) {
        const component = this.resolvers.component.resolve(type);
        if (component) {
            // Check whether a give Type has respective NG def (ɵcmp) and compile if def is
            // missing. That might happen in case a class without any Angular decorators extends another
            // class where Component/Directive/Pipe decorator is defined.
            if (isComponentDefPendingResolution(type) || !type.hasOwnProperty(ɵNG_COMP_DEF)) {
                this.pendingComponents.add(type);
            }
            this.seenComponents.add(type);
            // Keep track of the module which declares this component, so later the component's scope
            // can be set correctly. If the component has already been recorded here, then one of several
            // cases is true:
            // * the module containing the component was imported multiple times (common).
            // * the component is declared in multiple modules (which is an error).
            // * the component was in 'declarations' of the testing module, and also in an imported module
            //   in which case the module scope will be TestingModuleOverride.DECLARATION.
            // * overrideTemplateUsingTestingModule was called for the component in which case the module
            //   scope will be TestingModuleOverride.OVERRIDE_TEMPLATE.
            //
            // If the component was previously in the testing module's 'declarations' (meaning the
            // current value is TestingModuleOverride.DECLARATION), then `moduleType` is the component's
            // real module, which was imported. This pattern is understood to mean that the component
            // should use its original scope, but that the testing module should also contain the
            // component in its scope.
            if (!this.componentToModuleScope.has(type) ||
                this.componentToModuleScope.get(type) === TestingModuleOverride.DECLARATION) {
                this.componentToModuleScope.set(type, moduleType);
            }
            return;
        }
        const directive = this.resolvers.directive.resolve(type);
        if (directive) {
            if (!type.hasOwnProperty(ɵNG_DIR_DEF)) {
                this.pendingDirectives.add(type);
            }
            this.seenDirectives.add(type);
            return;
        }
        const pipe = this.resolvers.pipe.resolve(type);
        if (pipe && !type.hasOwnProperty(ɵNG_PIPE_DEF)) {
            this.pendingPipes.add(type);
            return;
        }
    }
    queueTypesFromModulesArray(arr) {
        // Because we may encounter the same NgModule while processing the imports and exports of an
        // NgModule tree, we cache them in this set so we can skip ones that have already been seen
        // encountered. In some test setups, this caching resulted in 10X runtime improvement.
        const processedNgModuleDefs = new Set();
        const queueTypesFromModulesArrayRecur = (arr) => {
            for (const value of arr) {
                if (Array.isArray(value)) {
                    queueTypesFromModulesArrayRecur(value);
                }
                else if (hasNgModuleDef(value)) {
                    const def = value.ɵmod;
                    if (processedNgModuleDefs.has(def)) {
                        continue;
                    }
                    processedNgModuleDefs.add(def);
                    // Look through declarations, imports, and exports, and queue
                    // everything found there.
                    this.queueTypeArray(maybeUnwrapFn(def.declarations), value);
                    queueTypesFromModulesArrayRecur(maybeUnwrapFn(def.imports));
                    queueTypesFromModulesArrayRecur(maybeUnwrapFn(def.exports));
                }
            }
        };
        queueTypesFromModulesArrayRecur(arr);
    }
    // When module overrides (via `TestBed.overrideModule`) are present, it might affect all modules
    // that import (even transitively) an overridden one. For all affected modules we need to
    // recalculate their scopes for a given test run and restore original scopes at the end. The goal
    // of this function is to collect all affected modules in a set for further processing. Example:
    // if we have the following module hierarchy: A -> B -> C (where `->` means `imports`) and module
    // `C` is overridden, we consider `A` and `B` as affected, since their scopes might become
    // invalidated with the override.
    collectModulesAffectedByOverrides(arr) {
        const seenModules = new Set();
        const affectedModules = new Set();
        const calcAffectedModulesRecur = (arr, path) => {
            for (const value of arr) {
                if (Array.isArray(value)) {
                    // If the value is an array, just flatten it (by invoking this function recursively),
                    // keeping "path" the same.
                    calcAffectedModulesRecur(value, path);
                }
                else if (hasNgModuleDef(value)) {
                    if (seenModules.has(value)) {
                        // If we've seen this module before and it's included into "affected modules" list, mark
                        // the whole path that leads to that module as affected, but do not descend into its
                        // imports, since we already examined them before.
                        if (affectedModules.has(value)) {
                            path.forEach(item => affectedModules.add(item));
                        }
                        continue;
                    }
                    seenModules.add(value);
                    if (this.overriddenModules.has(value)) {
                        path.forEach(item => affectedModules.add(item));
                    }
                    // Examine module imports recursively to look for overridden modules.
                    const moduleDef = value[ɵNG_MOD_DEF];
                    calcAffectedModulesRecur(maybeUnwrapFn(moduleDef.imports), path.concat(value));
                }
            }
        };
        calcAffectedModulesRecur(arr, []);
        return affectedModules;
    }
    maybeStoreNgDef(prop, type) {
        if (!this.initialNgDefs.has(type)) {
            const currentDef = Object.getOwnPropertyDescriptor(type, prop);
            this.initialNgDefs.set(type, [prop, currentDef]);
        }
    }
    storeFieldOfDefOnType(type, defField, fieldName) {
        const def = type[defField];
        const originalValue = def[fieldName];
        this.defCleanupOps.push({ object: def, fieldName, originalValue });
    }
    /**
     * Clears current components resolution queue, but stores the state of the queue, so we can
     * restore it later. Clearing the queue is required before we try to compile components (via
     * `TestBed.compileComponents`), so that component defs are in sync with the resolution queue.
     */
    clearComponentResolutionQueue() {
        if (this.originalComponentResolutionQueue === null) {
            this.originalComponentResolutionQueue = new Map();
        }
        clearResolutionOfComponentResourcesQueue().forEach((value, key) => this.originalComponentResolutionQueue.set(key, value));
    }
    /*
     * Restores component resolution queue to the previously saved state. This operation is performed
     * as a part of restoring the state after completion of the current set of tests (that might
     * potentially mutate the state).
     */
    restoreComponentResolutionQueue() {
        if (this.originalComponentResolutionQueue !== null) {
            restoreComponentResolutionQueue(this.originalComponentResolutionQueue);
            this.originalComponentResolutionQueue = null;
        }
    }
    restoreOriginalState() {
        // Process cleanup ops in reverse order so the field's original value is restored correctly (in
        // case there were multiple overrides for the same field).
        forEachRight(this.defCleanupOps, (op) => {
            op.object[op.fieldName] = op.originalValue;
        });
        // Restore initial component/directive/pipe defs
        this.initialNgDefs.forEach((value, type) => {
            const [prop, descriptor] = value;
            if (!descriptor) {
                // Delete operations are generally undesirable since they have performance implications
                // on objects they were applied to. In this particular case, situations where this code
                // is invoked should be quite rare to cause any noticeable impact, since it's applied
                // only to some test cases (for example when class with no annotations extends some
                // @Component) when we need to clear 'ɵcmp' field on a given class to restore
                // its original state (before applying overrides and running tests).
                delete type[prop];
            }
            else {
                Object.defineProperty(type, prop, descriptor);
            }
        });
        this.initialNgDefs.clear();
        this.moduleProvidersOverridden.clear();
        this.restoreComponentResolutionQueue();
        // Restore the locale ID to the default value, this shouldn't be necessary but we never know
        ɵsetLocaleId(ɵDEFAULT_LOCALE_ID);
    }
    compileTestModule() {
        class RootScopeModule {
        }
        ɵcompileNgModuleDefs(RootScopeModule, {
            providers: [...this.rootProviderOverrides],
        });
        const ngZone = new NgZone({ enableLongStackTrace: true });
        const providers = [
            { provide: NgZone, useValue: ngZone },
            { provide: Compiler, useFactory: () => new R3TestCompiler(this) },
            ...this.providers,
            ...this.providerOverrides,
        ];
        const imports = [RootScopeModule, this.additionalModuleTypes, this.imports || []];
        // clang-format off
        ɵcompileNgModuleDefs(this.testModuleType, {
            declarations: this.declarations,
            imports,
            schemas: this.schemas,
            providers,
        }, /* allowDuplicateDeclarationsInRoot */ true);
        // clang-format on
        this.applyProviderOverridesToModule(this.testModuleType);
    }
    get injector() {
        if (this._injector !== null) {
            return this._injector;
        }
        const providers = [];
        const compilerOptions = this.platform.injector.get(COMPILER_OPTIONS);
        compilerOptions.forEach(opts => {
            if (opts.providers) {
                providers.push(opts.providers);
            }
        });
        if (this.compilerProviders !== null) {
            providers.push(...this.compilerProviders);
        }
        // TODO(ocombe): make this work with an Injector directly instead of creating a module for it
        class CompilerModule {
        }
        ɵcompileNgModuleDefs(CompilerModule, { providers });
        const CompilerModuleFactory = new ɵNgModuleFactory(CompilerModule);
        this._injector = CompilerModuleFactory.create(this.platform.injector).injector;
        return this._injector;
    }
    // get overrides for a specific provider (if any)
    getSingleProviderOverrides(provider) {
        const token = getProviderToken(provider);
        return this.providerOverridesByToken.get(token) || null;
    }
    getProviderOverrides(providers) {
        if (!providers || !providers.length || this.providerOverridesByToken.size === 0)
            return [];
        // There are two flattening operations here. The inner flatten() operates on the metadata's
        // providers and applies a mapping function which retrieves overrides for each incoming
        // provider. The outer flatten() then flattens the produced overrides array. If this is not
        // done, the array can contain other empty arrays (e.g. `[[], []]`) which leak into the
        // providers array and contaminate any error messages that might be generated.
        return flatten(flatten(providers, (provider) => this.getSingleProviderOverrides(provider) || []));
    }
    getOverriddenProviders(providers) {
        if (!providers || !providers.length || this.providerOverridesByToken.size === 0)
            return [];
        const flattenedProviders = flatten(providers);
        const overrides = this.getProviderOverrides(flattenedProviders);
        const overriddenProviders = [...flattenedProviders, ...overrides];
        const final = [];
        const seenOverriddenProviders = new Set();
        // We iterate through the list of providers in reverse order to make sure provider overrides
        // take precedence over the values defined in provider list. We also filter out all providers
        // that have overrides, keeping overridden values only. This is needed, since presence of a
        // provider with `ngOnDestroy` hook will cause this hook to be registered and invoked later.
        forEachRight(overriddenProviders, (provider) => {
            const token = getProviderToken(provider);
            if (this.providerOverridesByToken.has(token)) {
                if (!seenOverriddenProviders.has(token)) {
                    seenOverriddenProviders.add(token);
                    // Treat all overridden providers as `{multi: false}` (even if it's a multi-provider) to
                    // make sure that provided override takes highest precedence and is not combined with
                    // other instances of the same multi provider.
                    final.unshift(Object.assign(Object.assign({}, provider), { multi: false }));
                }
            }
            else {
                final.unshift(provider);
            }
        });
        return final;
    }
    hasProviderOverrides(providers) {
        return this.getProviderOverrides(providers).length > 0;
    }
    patchDefWithProviderOverrides(declaration, field) {
        const def = declaration[field];
        if (def && def.providersResolver) {
            this.maybeStoreNgDef(field, declaration);
            const resolver = def.providersResolver;
            const processProvidersFn = (providers) => this.getOverriddenProviders(providers);
            this.storeFieldOfDefOnType(declaration, field, 'providersResolver');
            def.providersResolver = (ngDef) => resolver(ngDef, processProvidersFn);
        }
    }
}
function initResolvers() {
    return {
        module: new NgModuleResolver(),
        component: new ComponentResolver(),
        directive: new DirectiveResolver(),
        pipe: new PipeResolver()
    };
}
function hasNgModuleDef(value) {
    return value.hasOwnProperty('ɵmod');
}
function maybeUnwrapFn(maybeFn) {
    return maybeFn instanceof Function ? maybeFn() : maybeFn;
}
function flatten(values, mapFn) {
    const out = [];
    values.forEach(value => {
        if (Array.isArray(value)) {
            out.push(...flatten(value, mapFn));
        }
        else {
            out.push(mapFn ? mapFn(value) : value);
        }
    });
    return out;
}
function getProviderField(provider, field) {
    return provider && typeof provider === 'object' && provider[field];
}
function getProviderToken(provider) {
    return getProviderField(provider, 'provide') || provider;
}
function isModuleWithProviders(value) {
    return value.hasOwnProperty('ngModule');
}
function forEachRight(values, fn) {
    for (let idx = values.length - 1; idx >= 0; idx--) {
        fn(values[idx], idx);
    }
}
function invalidTypeError(name, expectedType) {
    return new Error(`${name} class doesn't have @${expectedType} decorator or is missing metadata.`);
}
class R3TestCompiler {
    constructor(testBed) {
        this.testBed = testBed;
    }
    compileModuleSync(moduleType) {
        this.testBed._compileNgModuleSync(moduleType);
        return new ɵNgModuleFactory(moduleType);
    }
    compileModuleAsync(moduleType) {
        return __awaiter(this, void 0, void 0, function* () {
            yield this.testBed._compileNgModuleAsync(moduleType);
            return new ɵNgModuleFactory(moduleType);
        });
    }
    compileModuleAndAllComponentsSync(moduleType) {
        const ngModuleFactory = this.compileModuleSync(moduleType);
        const componentFactories = this.testBed._getComponentFactories(moduleType);
        return new ModuleWithComponentFactories(ngModuleFactory, componentFactories);
    }
    compileModuleAndAllComponentsAsync(moduleType) {
        return __awaiter(this, void 0, void 0, function* () {
            const ngModuleFactory = yield this.compileModuleAsync(moduleType);
            const componentFactories = this.testBed._getComponentFactories(moduleType);
            return new ModuleWithComponentFactories(ngModuleFactory, componentFactories);
        });
    }
    clearCache() { }
    clearCacheFor(type) { }
    getModuleId(moduleType) {
        const meta = this.testBed._getModuleResolver().resolve(moduleType);
        return meta && meta.id || undefined;
    }
}

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
/**
 * An abstract class for inserting the root test component element in a platform independent way.
 *
 * @publicApi
 */
class TestComponentRenderer {
    insertRootElement(rootElementId) { }
}
/**
 * @publicApi
 */
const ComponentFixtureAutoDetect = new InjectionToken('ComponentFixtureAutoDetect');
/**
 * @publicApi
 */
const ComponentFixtureNoNgZone = new InjectionToken('ComponentFixtureNoNgZone');

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
let _nextRootElementId = 0;
/**
 * @description
 * Configures and initializes environment for unit testing and provides methods for
 * creating components and services in unit tests.
 *
 * TestBed is the primary api for writing unit tests for Angular applications and libraries.
 *
 * Note: Use `TestBed` in tests. It will be set to either `TestBedViewEngine` or `TestBedRender3`
 * according to the compiler used.
 */
class TestBedRender3 {
    constructor() {
        // Properties
        this.platform = null;
        this.ngModule = null;
        this._compiler = null;
        this._testModuleRef = null;
        this._activeFixtures = [];
        this._globalCompilationChecked = false;
    }
    /**
     * Initialize the environment for testing with a compiler factory, a PlatformRef, and an
     * angular module. These are common to every test in the suite.
     *
     * This may only be called once, to set up the common providers for the current test
     * suite on the current platform. If you absolutely need to change the providers,
     * first use `resetTestEnvironment`.
     *
     * Test modules and platforms for individual platforms are available from
     * '@angular/<platform_name>/testing'.
     *
     * @publicApi
     */
    static initTestEnvironment(ngModule, platform, aotSummaries) {
        const testBed = _getTestBedRender3();
        testBed.initTestEnvironment(ngModule, platform, aotSummaries);
        return testBed;
    }
    /**
     * Reset the providers for the test injector.
     *
     * @publicApi
     */
    static resetTestEnvironment() {
        _getTestBedRender3().resetTestEnvironment();
    }
    static configureCompiler(config) {
        _getTestBedRender3().configureCompiler(config);
        return TestBedRender3;
    }
    /**
     * Allows overriding default providers, directives, pipes, modules of the test injector,
     * which are defined in test_injector.js
     */
    static configureTestingModule(moduleDef) {
        _getTestBedRender3().configureTestingModule(moduleDef);
        return TestBedRender3;
    }
    /**
     * Compile components with a `templateUrl` for the test's NgModule.
     * It is necessary to call this function
     * as fetching urls is asynchronous.
     */
    static compileComponents() {
        return _getTestBedRender3().compileComponents();
    }
    static overrideModule(ngModule, override) {
        _getTestBedRender3().overrideModule(ngModule, override);
        return TestBedRender3;
    }
    static overrideComponent(component, override) {
        _getTestBedRender3().overrideComponent(component, override);
        return TestBedRender3;
    }
    static overrideDirective(directive, override) {
        _getTestBedRender3().overrideDirective(directive, override);
        return TestBedRender3;
    }
    static overridePipe(pipe, override) {
        _getTestBedRender3().overridePipe(pipe, override);
        return TestBedRender3;
    }
    static overrideTemplate(component, template) {
        _getTestBedRender3().overrideComponent(component, { set: { template, templateUrl: null } });
        return TestBedRender3;
    }
    /**
     * Overrides the template of the given component, compiling the template
     * in the context of the TestingModule.
     *
     * Note: This works for JIT and AOTed components as well.
     */
    static overrideTemplateUsingTestingModule(component, template) {
        _getTestBedRender3().overrideTemplateUsingTestingModule(component, template);
        return TestBedRender3;
    }
    static overrideProvider(token, provider) {
        _getTestBedRender3().overrideProvider(token, provider);
        return TestBedRender3;
    }
    static inject(token, notFoundValue, flags) {
        return _getTestBedRender3().inject(token, notFoundValue, flags);
    }
    /** @deprecated from v9.0.0 use TestBed.inject */
    static get(token, notFoundValue = Injector.THROW_IF_NOT_FOUND, flags = InjectFlags.Default) {
        return _getTestBedRender3().inject(token, notFoundValue, flags);
    }
    static createComponent(component) {
        return _getTestBedRender3().createComponent(component);
    }
    static resetTestingModule() {
        _getTestBedRender3().resetTestingModule();
        return TestBedRender3;
    }
    /**
     * Initialize the environment for testing with a compiler factory, a PlatformRef, and an
     * angular module. These are common to every test in the suite.
     *
     * This may only be called once, to set up the common providers for the current test
     * suite on the current platform. If you absolutely need to change the providers,
     * first use `resetTestEnvironment`.
     *
     * Test modules and platforms for individual platforms are available from
     * '@angular/<platform_name>/testing'.
     *
     * @publicApi
     */
    initTestEnvironment(ngModule, platform, aotSummaries) {
        if (this.platform || this.ngModule) {
            throw new Error('Cannot set base providers because it has already been called');
        }
        this.platform = platform;
        this.ngModule = ngModule;
        this._compiler = new R3TestBedCompiler(this.platform, this.ngModule);
    }
    /**
     * Reset the providers for the test injector.
     *
     * @publicApi
     */
    resetTestEnvironment() {
        this.resetTestingModule();
        this._compiler = null;
        this.platform = null;
        this.ngModule = null;
    }
    resetTestingModule() {
        this.checkGlobalCompilationFinished();
        ɵresetCompiledComponents();
        if (this._compiler !== null) {
            this.compiler.restoreOriginalState();
        }
        this._compiler = new R3TestBedCompiler(this.platform, this.ngModule);
        this._testModuleRef = null;
        this.destroyActiveFixtures();
    }
    configureCompiler(config) {
        if (config.useJit != null) {
            throw new Error('the Render3 compiler JiT mode is not configurable !');
        }
        if (config.providers !== undefined) {
            this.compiler.setCompilerProviders(config.providers);
        }
    }
    configureTestingModule(moduleDef) {
        this.assertNotInstantiated('R3TestBed.configureTestingModule', 'configure the test module');
        this.compiler.configureTestingModule(moduleDef);
    }
    compileComponents() {
        return this.compiler.compileComponents();
    }
    inject(token, notFoundValue, flags) {
        if (token === TestBedRender3) {
            return this;
        }
        const UNDEFINED = {};
        const result = this.testModuleRef.injector.get(token, UNDEFINED, flags);
        return result === UNDEFINED ? this.compiler.injector.get(token, notFoundValue, flags) :
            result;
    }
    /** @deprecated from v9.0.0 use TestBed.inject */
    get(token, notFoundValue = Injector.THROW_IF_NOT_FOUND, flags = InjectFlags.Default) {
        return this.inject(token, notFoundValue, flags);
    }
    execute(tokens, fn, context) {
        const params = tokens.map(t => this.inject(t));
        return fn.apply(context, params);
    }
    overrideModule(ngModule, override) {
        this.assertNotInstantiated('overrideModule', 'override module metadata');
        this.compiler.overrideModule(ngModule, override);
    }
    overrideComponent(component, override) {
        this.assertNotInstantiated('overrideComponent', 'override component metadata');
        this.compiler.overrideComponent(component, override);
    }
    overrideTemplateUsingTestingModule(component, template) {
        this.assertNotInstantiated('R3TestBed.overrideTemplateUsingTestingModule', 'Cannot override template when the test module has already been instantiated');
        this.compiler.overrideTemplateUsingTestingModule(component, template);
    }
    overrideDirective(directive, override) {
        this.assertNotInstantiated('overrideDirective', 'override directive metadata');
        this.compiler.overrideDirective(directive, override);
    }
    overridePipe(pipe, override) {
        this.assertNotInstantiated('overridePipe', 'override pipe metadata');
        this.compiler.overridePipe(pipe, override);
    }
    /**
     * Overwrites all providers for the given token with the given provider definition.
     */
    overrideProvider(token, provider) {
        this.assertNotInstantiated('overrideProvider', 'override provider');
        this.compiler.overrideProvider(token, provider);
    }
    createComponent(type) {
        const testComponentRenderer = this.inject(TestComponentRenderer);
        const rootElId = `root${_nextRootElementId++}`;
        testComponentRenderer.insertRootElement(rootElId);
        const componentDef = type.ɵcmp;
        if (!componentDef) {
            throw new Error(`It looks like '${ɵstringify(type)}' has not been IVY compiled - it has no 'ɵcmp' field`);
        }
        // TODO: Don't cast as `InjectionToken<boolean>`, proper type is boolean[]
        const noNgZone = this.inject(ComponentFixtureNoNgZone, false);
        // TODO: Don't cast as `InjectionToken<boolean>`, proper type is boolean[]
        const autoDetect = this.inject(ComponentFixtureAutoDetect, false);
        const ngZone = noNgZone ? null : this.inject(NgZone, null);
        const componentFactory = new ɵRender3ComponentFactory(componentDef);
        const initComponent = () => {
            const componentRef = componentFactory.create(Injector.NULL, [], `#${rootElId}`, this.testModuleRef);
            return new ComponentFixture(componentRef, ngZone, autoDetect);
        };
        const fixture = ngZone ? ngZone.run(initComponent) : initComponent();
        this._activeFixtures.push(fixture);
        return fixture;
    }
    /**
     * @internal strip this from published d.ts files due to
     * https://github.com/microsoft/TypeScript/issues/36216
     */
    get compiler() {
        if (this._compiler === null) {
            throw new Error(`Need to call TestBed.initTestEnvironment() first`);
        }
        return this._compiler;
    }
    /**
     * @internal strip this from published d.ts files due to
     * https://github.com/microsoft/TypeScript/issues/36216
     */
    get testModuleRef() {
        if (this._testModuleRef === null) {
            this._testModuleRef = this.compiler.finalize();
        }
        return this._testModuleRef;
    }
    assertNotInstantiated(methodName, methodDescription) {
        if (this._testModuleRef !== null) {
            throw new Error(`Cannot ${methodDescription} when the test module has already been instantiated. ` +
                `Make sure you are not using \`inject\` before \`${methodName}\`.`);
        }
    }
    /**
     * Check whether the module scoping queue should be flushed, and flush it if needed.
     *
     * When the TestBed is reset, it clears the JIT module compilation queue, cancelling any
     * in-progress module compilation. This creates a potential hazard - the very first time the
     * TestBed is initialized (or if it's reset without being initialized), there may be pending
     * compilations of modules declared in global scope. These compilations should be finished.
     *
     * To ensure that globally declared modules have their components scoped properly, this function
     * is called whenever TestBed is initialized or reset. The _first_ time that this happens, prior
     * to any other operations, the scoping queue is flushed.
     */
    checkGlobalCompilationFinished() {
        // Checking _testNgModuleRef is null should not be necessary, but is left in as an additional
        // guard that compilations queued in tests (after instantiation) are never flushed accidentally.
        if (!this._globalCompilationChecked && this._testModuleRef === null) {
            ɵflushModuleScopingQueueAsMuchAsPossible();
        }
        this._globalCompilationChecked = true;
    }
    destroyActiveFixtures() {
        this._activeFixtures.forEach((fixture) => {
            try {
                fixture.destroy();
            }
            catch (e) {
                console.error('Error during cleanup of component', {
                    component: fixture.componentInstance,
                    stacktrace: e,
                });
            }
        });
        this._activeFixtures = [];
    }
}
let testBed;
function _getTestBedRender3() {
    return testBed = testBed || new TestBedRender3();
}

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
function unimplemented() {
    throw Error('unimplemented');
}
/**
 * Special interface to the compiler only used by testing
 *
 * @publicApi
 */
class TestingCompiler extends Compiler {
    get injector() {
        throw unimplemented();
    }
    overrideModule(module, overrides) {
        throw unimplemented();
    }
    overrideDirective(directive, overrides) {
        throw unimplemented();
    }
    overrideComponent(component, overrides) {
        throw unimplemented();
    }
    overridePipe(directive, overrides) {
        throw unimplemented();
    }
    /**
     * Allows to pass the compile summary from AOT compilation to the JIT compiler,
     * so that it can use the code generated by AOT.
     */
    loadAotSummaries(summaries) {
        throw unimplemented();
    }
    /**
     * Gets the component factory for the given component.
     * This assumes that the component has been compiled before calling this call using
     * `compileModuleAndAllComponents*`.
     */
    getComponentFactory(component) {
        throw unimplemented();
    }
    /**
     * Returns the component type that is stored in the given error.
     * This can be used for errors created by compileModule...
     */
    getComponentFromError(error) {
        throw unimplemented();
    }
}
TestingCompiler.decorators = [
    { type: Injectable }
];
/**
 * A factory for creating a Compiler
 *
 * @publicApi
 */
class TestingCompilerFactory {
}

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
let _nextRootElementId$1 = 0;
/**
 * @description
 * Configures and initializes environment for unit testing and provides methods for
 * creating components and services in unit tests.
 *
 * `TestBed` is the primary api for writing unit tests for Angular applications and libraries.
 *
 * Note: Use `TestBed` in tests. It will be set to either `TestBedViewEngine` or `TestBedRender3`
 * according to the compiler used.
 */
class TestBedViewEngine {
    constructor() {
        this._instantiated = false;
        this._compiler = null;
        this._moduleRef = null;
        this._moduleFactory = null;
        this._compilerOptions = [];
        this._moduleOverrides = [];
        this._componentOverrides = [];
        this._directiveOverrides = [];
        this._pipeOverrides = [];
        this._providers = [];
        this._declarations = [];
        this._imports = [];
        this._schemas = [];
        this._activeFixtures = [];
        this._testEnvAotSummaries = () => [];
        this._aotSummaries = [];
        this._templateOverrides = [];
        this._isRoot = true;
        this._rootProviderOverrides = [];
        this.platform = null;
        this.ngModule = null;
    }
    /**
     * Initialize the environment for testing with a compiler factory, a PlatformRef, and an
     * angular module. These are common to every test in the suite.
     *
     * This may only be called once, to set up the common providers for the current test
     * suite on the current platform. If you absolutely need to change the providers,
     * first use `resetTestEnvironment`.
     *
     * Test modules and platforms for individual platforms are available from
     * '@angular/<platform_name>/testing'.
     */
    static initTestEnvironment(ngModule, platform, aotSummaries) {
        const testBed = _getTestBedViewEngine();
        testBed.initTestEnvironment(ngModule, platform, aotSummaries);
        return testBed;
    }
    /**
     * Reset the providers for the test injector.
     */
    static resetTestEnvironment() {
        _getTestBedViewEngine().resetTestEnvironment();
    }
    static resetTestingModule() {
        _getTestBedViewEngine().resetTestingModule();
        return TestBedViewEngine;
    }
    /**
     * Allows overriding default compiler providers and settings
     * which are defined in test_injector.js
     */
    static configureCompiler(config) {
        _getTestBedViewEngine().configureCompiler(config);
        return TestBedViewEngine;
    }
    /**
     * Allows overriding default providers, directives, pipes, modules of the test injector,
     * which are defined in test_injector.js
     */
    static configureTestingModule(moduleDef) {
        _getTestBedViewEngine().configureTestingModule(moduleDef);
        return TestBedViewEngine;
    }
    /**
     * Compile components with a `templateUrl` for the test's NgModule.
     * It is necessary to call this function
     * as fetching urls is asynchronous.
     */
    static compileComponents() {
        return getTestBed().compileComponents();
    }
    static overrideModule(ngModule, override) {
        _getTestBedViewEngine().overrideModule(ngModule, override);
        return TestBedViewEngine;
    }
    static overrideComponent(component, override) {
        _getTestBedViewEngine().overrideComponent(component, override);
        return TestBedViewEngine;
    }
    static overrideDirective(directive, override) {
        _getTestBedViewEngine().overrideDirective(directive, override);
        return TestBedViewEngine;
    }
    static overridePipe(pipe, override) {
        _getTestBedViewEngine().overridePipe(pipe, override);
        return TestBedViewEngine;
    }
    static overrideTemplate(component, template) {
        _getTestBedViewEngine().overrideComponent(component, { set: { template, templateUrl: null } });
        return TestBedViewEngine;
    }
    /**
     * Overrides the template of the given component, compiling the template
     * in the context of the TestingModule.
     *
     * Note: This works for JIT and AOTed components as well.
     */
    static overrideTemplateUsingTestingModule(component, template) {
        _getTestBedViewEngine().overrideTemplateUsingTestingModule(component, template);
        return TestBedViewEngine;
    }
    static overrideProvider(token, provider) {
        _getTestBedViewEngine().overrideProvider(token, provider);
        return TestBedViewEngine;
    }
    static inject(token, notFoundValue, flags) {
        return _getTestBedViewEngine().inject(token, notFoundValue, flags);
    }
    /** @deprecated from v9.0.0 use TestBed.inject */
    static get(token, notFoundValue = Injector.THROW_IF_NOT_FOUND, flags = InjectFlags.Default) {
        return _getTestBedViewEngine().inject(token, notFoundValue, flags);
    }
    static createComponent(component) {
        return _getTestBedViewEngine().createComponent(component);
    }
    /**
     * Initialize the environment for testing with a compiler factory, a PlatformRef, and an
     * angular module. These are common to every test in the suite.
     *
     * This may only be called once, to set up the common providers for the current test
     * suite on the current platform. If you absolutely need to change the providers,
     * first use `resetTestEnvironment`.
     *
     * Test modules and platforms for individual platforms are available from
     * '@angular/<platform_name>/testing'.
     */
    initTestEnvironment(ngModule, platform, aotSummaries) {
        if (this.platform || this.ngModule) {
            throw new Error('Cannot set base providers because it has already been called');
        }
        this.platform = platform;
        this.ngModule = ngModule;
        if (aotSummaries) {
            this._testEnvAotSummaries = aotSummaries;
        }
    }
    /**
     * Reset the providers for the test injector.
     */
    resetTestEnvironment() {
        this.resetTestingModule();
        this.platform = null;
        this.ngModule = null;
        this._testEnvAotSummaries = () => [];
    }
    resetTestingModule() {
        ɵclearOverrides();
        this._aotSummaries = [];
        this._templateOverrides = [];
        this._compiler = null;
        this._moduleOverrides = [];
        this._componentOverrides = [];
        this._directiveOverrides = [];
        this._pipeOverrides = [];
        this._isRoot = true;
        this._rootProviderOverrides = [];
        this._moduleRef = null;
        this._moduleFactory = null;
        this._compilerOptions = [];
        this._providers = [];
        this._declarations = [];
        this._imports = [];
        this._schemas = [];
        this._instantiated = false;
        this._activeFixtures.forEach((fixture) => {
            try {
                fixture.destroy();
            }
            catch (e) {
                console.error('Error during cleanup of component', {
                    component: fixture.componentInstance,
                    stacktrace: e,
                });
            }
        });
        this._activeFixtures = [];
    }
    configureCompiler(config) {
        this._assertNotInstantiated('TestBed.configureCompiler', 'configure the compiler');
        this._compilerOptions.push(config);
    }
    configureTestingModule(moduleDef) {
        this._assertNotInstantiated('TestBed.configureTestingModule', 'configure the test module');
        if (moduleDef.providers) {
            this._providers.push(...moduleDef.providers);
        }
        if (moduleDef.declarations) {
            this._declarations.push(...moduleDef.declarations);
        }
        if (moduleDef.imports) {
            this._imports.push(...moduleDef.imports);
        }
        if (moduleDef.schemas) {
            this._schemas.push(...moduleDef.schemas);
        }
        if (moduleDef.aotSummaries) {
            this._aotSummaries.push(moduleDef.aotSummaries);
        }
    }
    compileComponents() {
        if (this._moduleFactory || this._instantiated) {
            return Promise.resolve(null);
        }
        const moduleType = this._createCompilerAndModule();
        return this._compiler.compileModuleAndAllComponentsAsync(moduleType)
            .then((moduleAndComponentFactories) => {
            this._moduleFactory = moduleAndComponentFactories.ngModuleFactory;
        });
    }
    _initIfNeeded() {
        if (this._instantiated) {
            return;
        }
        if (!this._moduleFactory) {
            try {
                const moduleType = this._createCompilerAndModule();
                this._moduleFactory =
                    this._compiler.compileModuleAndAllComponentsSync(moduleType).ngModuleFactory;
            }
            catch (e) {
                const errorCompType = this._compiler.getComponentFromError(e);
                if (errorCompType) {
                    throw new Error(`This test module uses the component ${ɵstringify(errorCompType)} which is using a "templateUrl" or "styleUrls", but they were never compiled. ` +
                        `Please call "TestBed.compileComponents" before your test.`);
                }
                else {
                    throw e;
                }
            }
        }
        for (const { component, templateOf } of this._templateOverrides) {
            const compFactory = this._compiler.getComponentFactory(templateOf);
            ɵoverrideComponentView(component, compFactory);
        }
        const ngZone = new NgZone({ enableLongStackTrace: true, shouldCoalesceEventChangeDetection: false });
        const providers = [{ provide: NgZone, useValue: ngZone }];
        const ngZoneInjector = Injector.create({
            providers: providers,
            parent: this.platform.injector,
            name: this._moduleFactory.moduleType.name
        });
        this._moduleRef = this._moduleFactory.create(ngZoneInjector);
        // ApplicationInitStatus.runInitializers() is marked @internal to core. So casting to any
        // before accessing it.
        this._moduleRef.injector.get(ApplicationInitStatus).runInitializers();
        this._instantiated = true;
    }
    _createCompilerAndModule() {
        const providers = this._providers.concat([{ provide: TestBed, useValue: this }]);
        const declarations = [...this._declarations, ...this._templateOverrides.map(entry => entry.templateOf)];
        const rootScopeImports = [];
        const rootProviderOverrides = this._rootProviderOverrides;
        if (this._isRoot) {
            class RootScopeModule {
            }
            RootScopeModule.decorators = [
                { type: NgModule, args: [{
                            providers: [
                                ...rootProviderOverrides,
                            ],
                            jit: true,
                        },] }
            ];
            rootScopeImports.push(RootScopeModule);
        }
        providers.push({ provide: ɵINJECTOR_SCOPE, useValue: this._isRoot ? 'root' : null });
        const imports = [rootScopeImports, this.ngModule, this._imports];
        const schemas = this._schemas;
        class DynamicTestModule {
        }
        DynamicTestModule.decorators = [
            { type: NgModule, args: [{ providers, declarations, imports, schemas, jit: true },] }
        ];
        const compilerFactory = this.platform.injector.get(TestingCompilerFactory);
        this._compiler = compilerFactory.createTestingCompiler(this._compilerOptions);
        for (const summary of [this._testEnvAotSummaries, ...this._aotSummaries]) {
            this._compiler.loadAotSummaries(summary);
        }
        this._moduleOverrides.forEach((entry) => this._compiler.overrideModule(entry[0], entry[1]));
        this._componentOverrides.forEach((entry) => this._compiler.overrideComponent(entry[0], entry[1]));
        this._directiveOverrides.forEach((entry) => this._compiler.overrideDirective(entry[0], entry[1]));
        this._pipeOverrides.forEach((entry) => this._compiler.overridePipe(entry[0], entry[1]));
        return DynamicTestModule;
    }
    _assertNotInstantiated(methodName, methodDescription) {
        if (this._instantiated) {
            throw new Error(`Cannot ${methodDescription} when the test module has already been instantiated. ` +
                `Make sure you are not using \`inject\` before \`${methodName}\`.`);
        }
    }
    inject(token, notFoundValue, flags) {
        this._initIfNeeded();
        if (token === TestBed) {
            return this;
        }
        // Tests can inject things from the ng module and from the compiler,
        // but the ng module can't inject things from the compiler and vice versa.
        const UNDEFINED = {};
        const result = this._moduleRef.injector.get(token, UNDEFINED, flags);
        return result === UNDEFINED ? this._compiler.injector.get(token, notFoundValue, flags) :
            result;
    }
    /** @deprecated from v9.0.0 use TestBed.inject */
    get(token, notFoundValue = Injector.THROW_IF_NOT_FOUND, flags = InjectFlags.Default) {
        return this.inject(token, notFoundValue, flags);
    }
    execute(tokens, fn, context) {
        this._initIfNeeded();
        const params = tokens.map(t => this.inject(t));
        return fn.apply(context, params);
    }
    overrideModule(ngModule, override) {
        this._assertNotInstantiated('overrideModule', 'override module metadata');
        this._moduleOverrides.push([ngModule, override]);
    }
    overrideComponent(component, override) {
        this._assertNotInstantiated('overrideComponent', 'override component metadata');
        this._componentOverrides.push([component, override]);
    }
    overrideDirective(directive, override) {
        this._assertNotInstantiated('overrideDirective', 'override directive metadata');
        this._directiveOverrides.push([directive, override]);
    }
    overridePipe(pipe, override) {
        this._assertNotInstantiated('overridePipe', 'override pipe metadata');
        this._pipeOverrides.push([pipe, override]);
    }
    overrideProvider(token, provider) {
        this._assertNotInstantiated('overrideProvider', 'override provider');
        this.overrideProviderImpl(token, provider);
    }
    overrideProviderImpl(token, provider, deprecated = false) {
        let def = null;
        if (typeof token !== 'string' && (def = ɵgetInjectableDef(token)) && def.providedIn === 'root') {
            if (provider.useFactory) {
                this._rootProviderOverrides.push({ provide: token, useFactory: provider.useFactory, deps: provider.deps || [] });
            }
            else {
                this._rootProviderOverrides.push({ provide: token, useValue: provider.useValue });
            }
        }
        let flags = 0;
        let value;
        if (provider.useFactory) {
            flags |= 1024 /* TypeFactoryProvider */;
            value = provider.useFactory;
        }
        else {
            flags |= 256 /* TypeValueProvider */;
            value = provider.useValue;
        }
        const deps = (provider.deps || []).map((dep) => {
            let depFlags = 0 /* None */;
            let depToken;
            if (Array.isArray(dep)) {
                dep.forEach((entry) => {
                    if (entry instanceof Optional) {
                        depFlags |= 2 /* Optional */;
                    }
                    else if (entry instanceof SkipSelf) {
                        depFlags |= 1 /* SkipSelf */;
                    }
                    else {
                        depToken = entry;
                    }
                });
            }
            else {
                depToken = dep;
            }
            return [depFlags, depToken];
        });
        ɵoverrideProvider({ token, flags, deps, value, deprecatedBehavior: deprecated });
    }
    overrideTemplateUsingTestingModule(component, template) {
        this._assertNotInstantiated('overrideTemplateUsingTestingModule', 'override template');
        class OverrideComponent {
        }
        OverrideComponent.decorators = [
            { type: Component, args: [{ selector: 'empty', template, jit: true },] }
        ];
        this._templateOverrides.push({ component, templateOf: OverrideComponent });
    }
    createComponent(component) {
        this._initIfNeeded();
        const componentFactory = this._compiler.getComponentFactory(component);
        if (!componentFactory) {
            throw new Error(`Cannot create the component ${ɵstringify(component)} as it was not imported into the testing module!`);
        }
        // TODO: Don't cast as `InjectionToken<boolean>`, declared type is boolean[]
        const noNgZone = this.inject(ComponentFixtureNoNgZone, false);
        // TODO: Don't cast as `InjectionToken<boolean>`, declared type is boolean[]
        const autoDetect = this.inject(ComponentFixtureAutoDetect, false);
        const ngZone = noNgZone ? null : this.inject(NgZone, null);
        const testComponentRenderer = this.inject(TestComponentRenderer);
        const rootElId = `root${_nextRootElementId$1++}`;
        testComponentRenderer.insertRootElement(rootElId);
        const initComponent = () => {
            const componentRef = componentFactory.create(Injector.NULL, [], `#${rootElId}`, this._moduleRef);
            return new ComponentFixture(componentRef, ngZone, autoDetect);
        };
        const fixture = !ngZone ? initComponent() : ngZone.run(initComponent);
        this._activeFixtures.push(fixture);
        return fixture;
    }
}
/**
 * @description
 * Configures and initializes environment for unit testing and provides methods for
 * creating components and services in unit tests.
 *
 * `TestBed` is the primary api for writing unit tests for Angular applications and libraries.
 *
 * Note: Use `TestBed` in tests. It will be set to either `TestBedViewEngine` or `TestBedRender3`
 * according to the compiler used.
 *
 * @publicApi
 */
const TestBed = ɵivyEnabled ? TestBedRender3 : TestBedViewEngine;
/**
 * Returns a singleton of the applicable `TestBed`.
 *
 * It will be either an instance of `TestBedViewEngine` or `TestBedRender3`.
 *
 * @publicApi
 */
const getTestBed = ɵivyEnabled ? _getTestBedRender3 : _getTestBedViewEngine;
let testBed$1;
function _getTestBedViewEngine() {
    return testBed$1 = testBed$1 || new TestBedViewEngine();
}
/**
 * Allows injecting dependencies in `beforeEach()` and `it()`.
 *
 * Example:
 *
 * ```
 * beforeEach(inject([Dependency, AClass], (dep, object) => {
 *   // some code that uses `dep` and `object`
 *   // ...
 * }));
 *
 * it('...', inject([AClass], (object) => {
 *   object.doSomething();
 *   expect(...);
 * })
 * ```
 *
 * Notes:
 * - inject is currently a function because of some Traceur limitation the syntax should
 * eventually
 *   becomes `it('...', @Inject (object: AClass, async: AsyncTestCompleter) => { ... });`
 *
 * @publicApi
 */
function inject(tokens, fn) {
    const testBed = getTestBed();
    if (tokens.indexOf(AsyncTestCompleter) >= 0) {
        // Not using an arrow function to preserve context passed from call site
        return function () {
            // Return an async test method that returns a Promise if AsyncTestCompleter is one of
            // the injected tokens.
            return testBed.compileComponents().then(() => {
                const completer = testBed.inject(AsyncTestCompleter);
                testBed.execute(tokens, fn, this);
                return completer.promise;
            });
        };
    }
    else {
        // Not using an arrow function to preserve context passed from call site
        return function () {
            return testBed.execute(tokens, fn, this);
        };
    }
}
/**
 * @publicApi
 */
class InjectSetupWrapper {
    constructor(_moduleDef) {
        this._moduleDef = _moduleDef;
    }
    _addModule() {
        const moduleDef = this._moduleDef();
        if (moduleDef) {
            getTestBed().configureTestingModule(moduleDef);
        }
    }
    inject(tokens, fn) {
        const self = this;
        // Not using an arrow function to preserve context passed from call site
        return function () {
            self._addModule();
            return inject(tokens, fn).call(this);
        };
    }
}
function withModule(moduleDef, fn) {
    if (fn) {
        // Not using an arrow function to preserve context passed from call site
        return function () {
            const testBed = getTestBed();
            if (moduleDef) {
                testBed.configureTestingModule(moduleDef);
            }
            return fn.apply(this);
        };
    }
    return new InjectSetupWrapper(() => moduleDef);
}

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
const _global = (typeof window === 'undefined' ? global : window);
// Reset the test providers and the fake async zone before each test.
if (_global.beforeEach) {
    _global.beforeEach(() => {
        TestBed.resetTestingModule();
        resetFakeAsyncZone();
    });
}
/**
 * This API should be removed. But doing so seems to break `google3` and so it requires a bit of
 * investigation.
 *
 * A work around is to mark it as `@codeGenApi` for now and investigate later.
 *
 * @codeGenApi
 */
// TODO(iminar): Remove this code in a safe way.
const __core_private_testing_placeholder__ = '';

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
// This file only reexports content of the `src` folder. Keep it that way.

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

/**
 * Generated bundle index. Do not edit.
 */

export { ComponentFixture, ComponentFixtureAutoDetect, ComponentFixtureNoNgZone, InjectSetupWrapper, TestBed, TestComponentRenderer, __core_private_testing_placeholder__, async, discardPeriodicTasks, fakeAsync, flush, flushMicrotasks, getTestBed, inject, resetFakeAsyncZone, tick, waitForAsync, withModule, MetadataOverrider as ɵMetadataOverrider, TestingCompiler as ɵTestingCompiler, TestingCompilerFactory as ɵTestingCompilerFactory, TestBedViewEngine as ɵangular_packages_core_testing_testing_a, TestBedRender3 as ɵangular_packages_core_testing_testing_b, _getTestBedRender3 as ɵangular_packages_core_testing_testing_c };
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